Antibiotic problem please help

Mga mommies im so worried maybe someone can help or answered if you encounter same situation, as per my doctor meron akong UTI so she gave me Cefuroxime i take 4 tablet (2days) then in my 2nd day ng dudumi ako ng tubig lng at ng karoon ako ng rushes, meron po bng nk experience same ng ngyari saken, im so worried bka po kc me effect s baby ung body reaction, im not sure if tlgang s antibiotic reaction to or bka me nakain ako. Thank you po s ssagot.